Method of making paper boxes.



F. J. MOTZ.

METHOD OF MAKING PAPER BOXES.

- APPLIUATION rum) APR.14, 1908.

996,785. Patented July 4, 1911.

.FIBI. f

-' ATTORNEY COLUMBIA PLANOGRAPH cm, WASHINGTON, D. 2.. l

FREDERICK J. MOTZ, OF NEW YORK, N. Y.

METHOD OF MAKING PAPER BOXES.

To all whom it may concern:

Be it known that I, FREDERICK J Mo'rz, a citizenof the United States,and a resident of the city of New York, county of New York, and State ofNew York, have invented certain new and useful Improvements in Methodsof Making Paper Boxes, of which the following is a full, clear, andexact specification, such as will enable others skilled in the art towhich it appertains to make and use the same.

My invention relates to the manufacture of paper boxes, cartons and thelike, such for example as are usually manufactured of cardboard; and theobject of the invention is to enable such boxes to be constructedstronger, more rapidly and cheaply than heretofore. I attain this end bycertain novel features which will be fully set forth hereinafter andparticularly pointed out in the claims.

Reference is had to the accompanying drawings which illustrate two ofthe possible manners in which my invention may be practiced and inwhich,

Figure l is a plan view of a form or mandrel showing the winding of thepaper around it in the construction of the box. Fig. 2 is an exaggeratedcross section thereof, and Fig. 3 is a perspective view of the box thusformed, after being set up As shown in Figs. 1 and 2 a fiat mandrel a isprovided and around this mandrel is wound a continuous sheet of paper I)in two or more thicknesses or co-extensive layers until the aggregatethickness is equal to that desired. Simultaneously before thus windingthe sheet, or at any other convenient period in the operation, the sheetis coated with an adhesive compound, so that the folds are closelycemented together, forming an extremely tough and perfectly seamlessbox. To enable the structure shown in Fig. 2 to be easily distended toform a square box, I form creases or scores d with a suitable instrumentpreferably while the adhesive substance of the sheets a is still moist.These creases or scores cl are two in number, one in each side of theplate a, for example, in the positions indicated by the arrows d in Fig.2. I then cut the ends of the structure as for example at c and scorethe box at (Z to form the tabs 0 shown in Fig. 3.

Specification of Letters Patent.

Application filed- April 14, 1908.

Patented July 4, 1911.

Serial No. 426,934.

This structure readily folds flat for shipment and may be distended atwill and filled, at which time it assumes its normal form.

My invention is not limited in respect to the manner in which its endsare closed. The method described admits of exerting considerablepressure on the sheet and thereby increasing the closeness of the bondbetween the layers.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent of the United States is:

1. The art of forming a rectangular seamless paper receptacle whichconsists in wrapping sheet paper on itself around a flat mandrel to formtwo or more complete layers each extending around the receptacle, inapplying an adhesive substance to such layers to unite them integrallyinto a seamless structure the edges of the mandrel forming two cornersof the receptacle, in scoring the sides of the receptacle bet-ween theedges of the mandrel to facilitate forming the two two corners of thereceptacle, in scoring the sides of the receptacle between the edges ofthe mandrel to facilitate forming the two remaining corners of thereceptacle, in slitting the ends of the receptacle to produce sealingtabs and in removing the receptacle from the mandrel whereby saidreceptacle may be shipped flat and distended into its normal form whendesired.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

FREDERICK J. MOTZ.

Witnesses:

W. N. JOHNSON, Jr., A. K. OSBORNE.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

